JP2809159B2 - Aircraft altitude warning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for an aircraft, which displays an alarm display on an aircraft flying below the minimum guidance altitude stipulated in the control and an aircraft expected to fly, and gives a warning to a controller. It relates to an aircraft altitude warning device for notification.

[0002]

2. Description of the Related Art Conventionally, this type of warning device monitors a warning state by predicting a future three-dimensional position on the basis of information on the current position of the aircraft and past wake information, and monitors the warning state so as to be lower than a set minimum guidance altitude. When an aircraft is predicted to enter, an alarm display on the display device is displayed on the display device to notify a controller (Japanese Patent Laid-Open No. 3-161900).

[0003]

The problem of the conventional alarm judgment is that even if the controller intentionally guides the aircraft to the vicinity of the minimum guidance altitude, there is a possibility that an alarm will be generated, so the controller is not required. It is a point that calls attention and applies a load.

[0004] The reason is that, in the conventional alarm determination, the aircraft predicts the future flight altitude assuming that the aircraft will continue to fly in a straight line. If the aircraft flies along a route other than a straight flight such as ".", Accurate prediction is impossible, and it is predicted that the aircraft will fly below the minimum guidance altitude in the future.

In order to solve the above-mentioned problems, the present invention focuses on the fact that, in an instrument flight system of an aircraft, the altitude change rate at the time of changing the altitude according to the instruction of a controller is defined by regulations. Unnecessary for the controller by judging whether it is a descent by the controller's instruction based on the altitude change rate obtained only by referring to the table storing the altitude change patterns of the past several times and making an alarm judgment The purpose is to avoid calling attention and reduce the load on the controller.

[0006]

SUMMARY OF THE INVENTION An aircraft altitude warning device according to the present invention is provided with an altitude difference between the current and previous altitudes of an aircraft.
A plurality of predetermined altitude change patterns corresponding to the difference
Height change pattern extraction method that selects and outputs one of the
And the altitude change pattern
Predetermined multiple climbs according to the turn transition
Select one of the lower patterns and change this to the current altitude of the aircraft
Altitude change rate extracting means for extracting as altitude change rate information , and alarm determining means for determining the degree of danger of flight of the aircraft based on the ascending / descending pattern as the altitude change rate information and the altitude information of the aircraft to generate alarm information And output means for outputting information on the aircraft, such as position and altitude, and the warning information.

[0007] Further, the climbing / falling pattern is
It can be determined from the past multiple changes in altitude change pattern
It is configured as follows.

[0008] Then, the alarm determining means, the current rise
Based on the drop pattern and altitude information of the aircraft, the Rise
An alarm determination may be made based on whether or not the descent pattern satisfies the rules for altitude change in instrument flight. ?

Further, the alarm judging means generates the alarm information as a warning state when the altitude change rate information is a descent within the regulation of altitude change in the instrument flight, and as an alarm state when the altitude change information is a descent exceeding the regulation. Can be configured.

The apparatus further includes altitude filter means for outputting target aircraft information based on the position information of the aircraft and the minimum guidance altitude information, the target being an aircraft having an altitude equal to or less than a predetermined value greater than the minimum guidance altitude. It can be configured to limit the target device for which is determined.

More specifically, the aircraft altitude warning device of the present invention sets a minimum altitude in air traffic control called a minimum guidance altitude as a lower limit, and then judges an alarm for an aircraft flying at an altitude higher than 1000 feet. Altitude filter means to exclude from the target, means to store altitude change patterns representing multiple past ascending and descending states, means to determine the current altitude change rate from the altitude change pattern, based on the current altitude change rate and altitude information It includes an alarm determination means for performing an alarm determination based on whether or not the flight pattern satisfies the regulation for changing the altitude of the instrument flight method, and a display means for notifying the controller of the alarm state.

As conditions for judging the alarm state, it is set whether or not the current altitude change rate and altitude satisfy the altitude change rule of the instrument flight system. For this reason, aircraft that are descending near the minimum guidance altitude with a value equal to or less than the specified altitude change rate according to the instruction of the controller are not subject to alarm. In addition, due to an error in the altitude instruction of the controller, an error in the pilot of the aircraft, etc., an alarm is issued for aircraft descending at a value higher than the specified altitude change rate or for aircraft already entering below the minimum guidance altitude. And notify the controller of the alarm condition. Thus, unnecessary warnings to the controller can be suppressed.

[0013]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram including an embodiment of the present invention. MVA (Minimum Vectorin) storing the minimum guidance altitude information 1 of the alarm monitoring area
gAltitude: minimum induction altitude) memory circuit (S
1), an altitude filter circuit (S) that limits the target aircraft based on X, Y position information 2, altitude information 3, and minimum guidance altitude 1.
2) An altitude storage circuit (S3) for storing the altitude information 4 immediately before the altitude change pattern extracting circuit (S4) for extracting an altitude change pattern 5 from the altitude information 4 and the altitude information 3 just before the altitude. An altitude change pattern storage circuit (S5) capable of storing altitude change patterns 5 up to five times in the past, an altitude change rate extraction circuit (S6) for extracting current altitude change rate information 6 from the stored altitude change patterns 5, It comprises an alarm state determination circuit (S7) for determining an alarm state based on the altitude information 3 and the altitude change rate information 6, and a display device (S8) for displaying the alarm information 7.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 2 is a flowchart showing the operation of the embodiment of the present invention. The altitude information 3 is input, and the altitude change pattern extraction circuit (S4) uses the difference from the altitude information 4 one time (scanned) before in the altitude storage circuit (S3).
The altitude change pattern 5 is extracted according to the following.

The altitude change pattern is extracted as a discrete state pattern such as an ascending and descending state of the aircraft based on a difference between two times before and after a periodic measurement value of the altitude of the aircraft. FIG. 3 defines the correspondence between the altitude difference from the previous time and the altitude change pattern, and shows a reference for extracting the altitude change pattern.

Next, the altitude change pattern 5 is stored in the altitude change pattern storage circuit (S5). The altitude information 3 is stored in the altitude storage circuit (S6) for use in the next round. The altitude filter circuit (S2) determines, from the minimum guidance altitude information 1, the input X, Y position information 2, and the altitude information 3, that the flight altitude of the aircraft is an altitude equal to or less than (minimum guidance altitude +1000 feet). To limit the target machines.

The altitude change rate extraction circuit (S6) determines which of the altitude change patterns of the target machine at most five times corresponds to FIG. 4 and outputs the altitude change rate information 6.

FIG. 4 shows the relationship between a plurality of combinations (up to 5 times) of the altitude change pattern and the rate of ascending and descending of the aircraft, and shows the criteria for extracting the altitude change rate.

The alarm state determination circuit (S7) first sets an alarm state when the current altitude is equal to or lower than the minimum guidance altitude, and sets a safety state when ascending or descending at a rate of change of 500 feet / min or less and rejects data. I do. The change rate is 5
When the vehicle is descending at a speed between 00 feet / min and less than 750 feet / min, a caution state is set, and 750 feet / m
If it falls below "in", an alarm condition is set. The display device (S8) displays the alarm status information 7 of the caution status and the alarm status, and notifies the controller.

[0022]

According to the aircraft altitude warning device of the present invention,
Unnecessary alarms generated when the aircraft changes altitude near the minimum guidance altitude can be prevented by the instruction of the controller.

The reason for this is that the alarm judgment is made only for aircraft in the vicinity of the lowest guidance altitude and is determined based on the condition that the current descent pattern satisfies the rules for changing the altitude of the instrument flight system. Because it does.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of an aircraft altitude warning device of the present invention.

FIG. 2 is a flowchart illustrating an operation of the embodiment of the aircraft altitude warning device of the present invention.

FIG. 3 is a diagram showing extraction criteria of an altitude change pattern extraction circuit according to the embodiment of the present invention.

FIG. 4 is a diagram showing an extraction criterion of an altitude change rate extraction circuit according to the embodiment of the present invention.

[Explanation of symbols]

 1 Minimum guidance altitude information 2 X, Y position information 3 Altitude information 4 1 Altitude information before scan 5 Altitude change pattern 6 Altitude change rate information 7 Alarm status information S1 MVA (minimum guidance altitude) storage circuit S2 Advanced filter circuit S3 Advanced storage Circuit S4 Altitude change pattern extraction circuit S5 Altitude change pattern storage circuit S6 Altitude change rate extraction circuit S7 Alarm status judgment circuit S8 Display device

Claims (3)

(57) [Claims] (1) According to a difference between the current and previous altitude of an aircraft,
A plurality of predetermined altitude changes corresponding to later altitude differences
Altitude change pattern that selects and outputs one of the conversion patterns
Receiving the extraction means and the extracted altitude change pattern;
Multiple rising and falling patterns determined according to the
One of the aircraft's altitudes and use it to determine the current altitude change rate of the aircraft.
And high rate of change extraction means for extracting as information, an alarm judging means for determining the risk of flight of the aircraft for generating a warning information based on the increased drop pattern and altitude information of the aircraft as the altitude rate of change information, the An aircraft altitude warning device, comprising: information about an aircraft, such as a position and altitude, and output means for outputting the warning information. 2. The aircraft altitude warning device according to claim 1, wherein the ascending / descending pattern is determined from a plurality of past changes in the altitude change pattern of the aircraft. Wherein the alarm determining means that the current rise drop path
Based on the altitude information of the turn and the aircraft, the increase in drop path
The aircraft altitude warning device according to claim 1 or 2, wherein a warning determination is made based on whether or not the turn satisfies a rule of altitude change in instrument flight.